tc39/ecma262
Removal of Object type-check from GetIterator() algorithm
Aperta
#746 aperta il 6 dic 2016
good first issueneeds consensusneeds specification text
Metriche repository
- Star
- (15.626 stelle)
- Metriche merge PR
- (Merge medio 92g 19h) (17 PR mergiate in 30 g)
Descrizione
The If Type(iterator) is not Object, throw a TypeError exception. step is generally not implemented by engines, see https://jsfiddle.net/gj3uaw1t/ for an example. V8 does implement this step for yield*, but not other uses of GetIterator().
It would be cool if we could remove this from the spec and have common behaviour among implementations (it seems a recent version of SpiderMonkey has added the typecheck, breaking compatibility between FF and Chrome/Safari in this very unlikely situation).